%0 Journal Article %1 WOS:000461766300001 %A Dias, Diego Felix %A Braga, Tiago Pinheiro %A Soares, Joao Maria %A Sasaki, Jose Marcos %C LABORATORIA DE MATERIAIS VITREOS, CAIXA POSTAL 676, SAO CARLOS, 13565-905SP, BRAZIL %D 2019 %I UNIV FED SAO CARLOS, DEPT ENGENHARIA MATERIALS %J MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS %K Co)(3)O-4; FeCo-(Fe, Oven Proteic Rotary Sol-Gel} and {Nanocomposite; %N 3 %R 10.1590/1980-5373-MR-2018-0446 %T Structural, Morphological and Magnetic Properties of FeCo-(Fe,Co)(3)O-4 Nanocomposite Synthesized by Proteic Sol-Gel Method Using a Rotary Oven %V 22 %X FeCo nanoparticles coated with (Fe,Co)(3)O-4 (magnetite doped with cobalt) were synthesized by the proteic sol-gel chemical route. The synthesized materials were characterized by Thermogravimetry (TG), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), vibrating-sample magnetometer (VSM) and Mossbauer spectroscopy (MS). The results show that the increase in temperature and the choice of the correct air/N-2 flow directly influence on the final physical-chemical properties of the nanocomposite. The SEM and TEM images confirmed that a thin layer of oxide was formed on the alloy, indicating that it was obtained a self-assembled FeCo-(Fe,Co)(3)O(4 )nanocomposites. In addition, the VSM results show that a possible exchange-spring coupling in magnetic FeCo-(Fe,Co)(3)O-4 nanoparticles occurred with high saturation magnetization from FeCo alloy and high coercivity from (Fe,Co)(3)O-4. The rotary oven allows the uniform contact of the powder with the atmosphere of synthesis during the different oxidation-reduction steps, generating more homogeneous particles.

@article{WOS:000461766300001, abstract = {FeCo nanoparticles coated with (Fe,Co)(3)O-4 (magnetite doped with cobalt) were synthesized by the proteic sol-gel chemical route. The synthesized materials were characterized by Thermogravimetry (TG), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), vibrating-sample magnetometer (VSM) and Mossbauer spectroscopy (MS). The results show that the increase in temperature and the choice of the correct air/N-2 flow directly influence on the final physical-chemical properties of the nanocomposite. The SEM and TEM images confirmed that a thin layer of oxide was formed on the alloy, indicating that it was obtained a self-assembled FeCo-(Fe,Co)(3)O(4 )nanocomposites. In addition, the VSM results show that a possible exchange-spring coupling in magnetic FeCo-(Fe,Co)(3)O-4 nanoparticles occurred with high saturation magnetization from FeCo alloy and high coercivity from (Fe,Co)(3)O-4. The rotary oven allows the uniform contact of the powder with the atmosphere of synthesis during the different oxidation-reduction steps, generating more homogeneous particles.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {LABORATORIA DE MATERIAIS VITREOS, CAIXA POSTAL 676, SAO CARLOS, 13565-905SP, BRAZIL}, author = {Dias, Diego Felix and Braga, Tiago Pinheiro and Soares, Joao Maria and Sasaki, Jose Marcos}, biburl = {https://www.bibsonomy.org/bibtex/20a19b837a2d4ccfdfadbdfd49505368e/ppgfis_ufc_br}, doi = {10.1590/1980-5373-MR-2018-0446}, interhash = {ade44f44f50d89742d3ae57e0033d8be}, intrahash = {0a19b837a2d4ccfdfadbdfd49505368e}, issn = {1516-1439}, journal = {MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS}, keywords = {Co)(3)O-4; FeCo-(Fe, Oven Proteic Rotary Sol-Gel} and {Nanocomposite;}, number = 3, publisher = {UNIV FED SAO CARLOS, DEPT ENGENHARIA MATERIALS}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Structural, Morphological and Magnetic Properties of FeCo-(Fe,Co)(3)O-4 Nanocomposite Synthesized by Proteic Sol-Gel Method Using a Rotary Oven}, tppubtype = {article}, volume = 22, year = 2019 }